Oiling system for internal-combustion engines



March 19, 1929. w /PEZOLD 1,705,645

OILING SYSTEM Fog IlfiERNAL COMBUSTION ENGINES Filed Nov. 26, 1927 1 Patented N lar. 19, 1929.

' tem 01- intern l n b s i engine% and 1. by the claims t 1s primarily intended for use with aeroplane motors.

' It is a wellknown fact that the lubricating :oiLi'n an aeroplane motoris subj ected to great V heat intensity of the motorand does not maintain body or consistency very long. Dur

" i ing distance flight or trip the motor recpnditions are developed; At present there is nqway erichangmg the oil during such flightffjconsequently the lubricating oil f: soonloses' its body, necessary to maintainthe momma an? eflicient, operating temperature. .It .is therefore the object of the present inf ve'nfibn toiprovide an oiling. systemffor' in- ;ernalco1nbustion engines whereby the oil in thecrank. case can be changed from time to time while'the motor is in operation. carrying out my invention, I compre-j tion'of the' oil through the motor, forselec- :tively' calling into use said reservoirs', so that al 6W. an'difresh supplypf oil'can 'be. had wh'enldesired." p M re'pecifically stated, the various reservoirs: communicate with the crank case'lof ;thej imo r, ,said;communication being con- -trolledby asingle'valve operablefrom a remote: p'ointg so thatf a particular reservoir ;can be used inthe system, and its use subse- --qi1em1 discontinued when it is desired to reservoin'r. V

V j'accordance with the present invention, v thecrank case can be drain'ed into the particu- 1 lar reservoir, the use of which is about to be ency of the fresh oil to be used will not be I A affected by the presence of the previously used gagoilin the crank case. V

A further object of theinvention resides in f f the provision of a valve which not only controls communication'betweenthe crankcase v and'variou sreservoirs fortheir selective use [.505 in the system, but'also controls or regulates I laii reservoir when such is desired.

n e i eec qhri th accompanying e This invention has" reference to oiling sys- While, its general application'is contemplated quiresfefl'icientilubrication, in the absence of" whicli motor-"trouble and other dangerous Figure 1.

. i hi d l' hjuseof'a, plurality of oilfreservoirs' 7 aldaptedto be singly employed in the 'circula-.

- use afresh body of contained in another discontinued sothat the body or consist 1 the drainingoffsaid crank case into a particu- Other objects and advantages will appear Y "when thefoll'owing detail description is read;

PATENT oF-Fiacn.

norm WI LIAM PEZOLD, or SANFOIRD, Fnoiunn. i f I. .OILINGSYSTEM roamrnnnan-colvrnusrron nivemns. 1 1

. Applicatinn filed no hi er 26,1927. Serial No. 235,943. A

ing, the invention residing in the construction, combination and'arrangementof parts asclaimedQ i V.

, In the drawing forming part of this application like numerals of reference indicate similar parts in the several. views and wherein: f

Figure 1 is a fragmentary sectional view of the lower part of the internal combustion engine, showing the. application of tl1e.in-.

vention.' Y,

Figure 2 is a sectional view on line 2.2 of

Figure 3 is a detail sectional view through the valve andvalve casing. I a f i Figure 1 is a detailview showing the valve and its operating rod; Y Referring to the drawing in detail 10 repre sents generally an. internal combustion en gine,the crank case of which is represented-- at 11. The crank shaft is shown at 12'while the bearings therefor are indicated at 13. While these hearings may be lubricated by. thewell known splash system, they. may also be connectedwith a supply pipe, especially,

inan aeroplane motor.

' Such a motor is herein illustrated, and each bear1ng'13 is supplied with oil, from (at-branch pipe, tnese pipes leading from the supply pipes 95. culates the oilthrough the reservoir 16 and pipes 14 and 18 respectively, while the pump 21 is used for the circulation ofoil through V the reservoir 17, and pipes 15 and 19 respectively. These pumps maybe operated from.

the motor in any suitable manner, such as indicated at 22, but it isto be understood that only one pump is used at a time. In order that the pumps may be selectively employed,

each of the pipes 18 and 19 is provided with a suitable valve 23, and these valves are independently operated from the'cockpit by means of rods 24; Consequentlythecirculation of oil from either reservoir canbe. cut off when desired. For instance, should the reservoir.

16 be in use, the oil would circulate through the pipe;18,- pump 20,; supply pipe -14andf thence "to; the various bearings 13 througlr branchpipes 25. The oil-then passes froni the crank case through avalve back to the res-;

ervoir 16. During the use of the oil from the reservoir 16 a fresh; supply of. oil is mains. tained in the reservoir 17' for useWhen the oil in the reservoir 16 haslostits body-and 'consistency. While the reservoirs 16 and 17 may be constructed in any suitable manner, and

located on any appropriate part of the ma chine, these reservoirs are preferablyrcon' structe'd as a" unit and arranged directly lieneatlithecrank .case'jto Wliich'it is secured in-any suitable-manners."Tlie preferred con-' struction of the reservoirs 16 and 17 'isill'us trated inFiguI-e' 1; and it vvill be no'ted that When'the oil is" being used rromone reservoir,

20- the oilmainta'inedin'the' other reserv'oiris" free from the heat of the imotor and thereh} keptin'a'reasonably'coolcondition) reservoir 17, it is only necessary to close the *?valve 24 for the pun1p*2Q,difain' the crank in a manner to be presently described, and then open the valves 23' for-the pump 21. The @11 then circulates from therese1'voirf17in the same mariner above described, entering the 80 hearing through the'branch pipes 26' of th'efl pipe 15:. Locatedin the bottomof eachreservoiris a pet cock 27 fondraining the 'reser-" voir, and thesepet cocks are-operated from the cockpit'of the machine by suitable control rods 281 Then again, each reservoir can be; re-

ply through afilling pipe 29"." V A rangedwithin thecrank 'case' isa-valve plenished WltllfI'GSh oilfrom a; suitab'Ies'uP casing F30 having jan inletb ranjch 31, opposed-i v outlet; branches 32 :and '33" respectively; and av liranch 3 1 through which the crank case is; v drained; Shortpipes 35ez'rtend from the out-g letbranches32an'd' 33 into the respective res-- ervoirs'TIG and17 It Will be notedupon inspection' ofFigure' 1 that theinle't branch 31'? isrelativelylongso as to extend to the normal level of the oil." 'Inth'is manner thecrank' case maintains its capacity of oil during the circulation" of the same. A rotary valve 36 operateswithinthe valve. casing to controlf thevarious'bran'ches, the port 37 off 'saidfva'l've registering'with tWo of said branches'inanygiven open position? In. other vvords,-When the port 37 registers Withthe inletb'ran'ch 31' it also registers with one of the outlet branches, depending of: course upon which reservoir is influsej' Again, when'th'elvalve is arranged to'registerwith'the' branch 34 11768- ta-blishesi communication between the crank case and one of the other of the reservoirs to drain'the oil fromthe'crank case into the particular reservoir: A 'valveioperating rodisindicated at 38 'and is suitably coupled as at 3'9?ivviththe valve, and the latter is controlled from=the cockpit of the machine;

When it is desired to-use the oil from tliej tionengines, alplurality'oftoil reserv ,motoris inoperation, means in operation, andfmeans for'control-ling'saidF 3 Valve from a remotepqnntf'fl Whatiscla'imedisr' v 1: In an oiling system forin ternal icombus' 'tiori "engines,-plu'rality"ofindependent oil reservoirs, each having communication with o he,vc ank c e fa e engi m s forv 1 trolling said communication whereby said l'resery'oirs. beg-singly and 1 selectively used in the system,said means beingalso employed:

for di'aining tlieclams-caseinto a particular reservong and means for dlflllllIlg Bfl-Ch res- 7 ervoirq fr'om a'remotepointi fj v 2. In an oiling system for internal." com bustionf engines; .azplurality o'f indepe d t oil reservoirs, "each havingcommunication with the crankcase oftlie"en1gine-, a"valve" B 'coiiti'ollingfsaid communication whereby said reservoirs'canl--be' singlyfandselectively usedj 1 Y I l in "the system, and permit of the dr'aining' of the crank" casejintonparticular"reservoir mote point, and a 'supply'pipecommunicatin v anioiling system for internal e mbus ti'on "engines; a plurality "of" independent 7 oili A, reservoirs,each having; communic "ion with" 9b the crank case o'f thefengine, nieansj'o ferable: from a remote point for'controllingfsaid coin munication Wherebysaid reservoirs" can: "be -c singlylandselectively used inthe's jste1ii ','an d1 intoiaparticular reservoir vvhiile theengine is" in operation;

.54; In w nin systmforintmaigemtfisa ea h" having communicationfjwith the 1 crank 1 oil may be drained from thefcrank a particular reservo r a nd the 0 other reservoir nsed 'infit-heksyste' whereby the' 'toilffrom thecrankcase" can" bedrained into a selected i reservoir, 1 means whereby th-e crank case can'be supplied withf oilfrom another reservoir whilei-thfe'en'gineis' 6;- In an oiling systern for" com bustion engines, plurality of independent oil" reservoirs each having communication-1 with-the crank casejof the engine foracon i a: tinuous circulation of oil through-the system "an 'd 'on'e off said reservoirs, avalve-casin'gf located within thecrankrasefand haivingan in-let branch terminating a'djacentthe normal oil level, outlefibranches leading? to the re i spective'reservoirs, avalve' opera'bleffiom $156" 1 means for draining any reservoir from a re: J .35

H V ca e-mt of'the engine, means inlu'clingfatvalve ftfr o; fif controlling saidjcominunic'at'ion 'whereby tliei r "35 5mm: s j I operatiiigi l Ii1an oiling-s stem feriirteinalibbnj fi i" remote point for controlling communication A between the crank case and said reservoirs i through'said outlet branches, whereby the oil I from the crank case can be drained into a par- 'f 5' ticular reservoir and supplied with fresh oil v from another reservoir during the operation.

ofthe engine, said valve caslng including an ervoir, said last mentioned branch being controlled by said valve, and means for draining each reservoir from a remote point.

In testimony whereof I aflix my signature.

JOHN W. PEZOLDG additional branch through which the oil is drained from the crank case to a selected res- 

